163744645 has 8 divisors (see below), whose sum is σ = 201063456. Its totient is φ = 127949136.

The previous prime is 163744639. The next prime is 163744657. The reversal of 163744645 is 546447361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163744645 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163744598 and 163744607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380587 + ... + 381016.

It is an arithmetic number, because the mean of its divisors is an integer number (25132932).

Almost surely, 2^163744645 is an apocalyptic number.

It is an amenable number.

163744645 is a deficient number, since it is larger than the sum of its proper divisors (37318811).

163744645 is an equidigital number, since it uses as much as digits as its factorization.

163744645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761651.

The product of its digits is 241920, while the sum is 40.

The square root of 163744645 is about 12796.2746531950. The cubic root of 163744645 is about 547.0861268953.

The spelling of 163744645 in words is "one hundred sixty-three million, seven hundred forty-four thousand, six hundred forty-five".